Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4LFB callsign genealogy
Currently held by Bethke, Lawrence F
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K4LFB's current licensee, walking backwards.
- Bethke, Lawrence FTNgranted 2011-08-16cancelled 2012-03-16
Successor callsigns
Callsigns held now by people who previously held K4LFB.
- Bethke, Lawrence FTNgranted 2021-05-01cancelled 2023-04-04